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Archived

Avalanche Forecast

Jan 11th, 2021–Jan 12th, 2021
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: Glacier.

Watch for pockets of fresh windslab today.

Expect the hazard to ramp up quickly on Tuesday with the incoming storm.

Weather Forecast

A weakening warm front gives flurries today.  An organized system Tuesday brings snowfall and rising freeing levels (Fzl).

Today: Flurries (5cm). Alpine High -5 C. Ridge wind moderate SW. Fzl 1300m.

Tonight: Flurries (4cm). Low -6 C.

Tuesday: Snow (16cm). High -3 C. Mod SW wind. Fzl 1400m.

Wednesday: Snow (24cm). Strong West wind. Fzl 1600m.

Snowpack Summary

New snow is covering a thin crust from sun and/or rime in exposed terrain, as well as surface hoar up to 10mm in the shaded areas at treeline and below. The Dec 26 surface hoar has been hard to locate down 70cm. The Dec 7th surface hoar/suncrust/facet layer is down 1.5m. Crusts (with some facetting) persist at the base of the snowpack.

Avalanche Summary

No new avalanches have been reported or observed.

Confidence

Intensity of incoming weather systems is uncertain

Avalanche Problems

Wind Slabs

Small pockets of windslab linger in isolated lee features.  These will increase in size quickly with the incoming storm.

  • Use caution above cliffs and terrain traps where small avalanches may have severe consequences.
  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

Aspects: North, North East, East, South East, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 1.5

Storm Slabs

Snowfall, wind and warm temps will build storm slabs on Tuesday.

  • The new snow will require several days to settle and stabilize.
  • Use safe ski cutting techniques to enter your line.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2